针对骨的外体纳米颗粒激活Keap1/Nrf2/GPX4信号通路,诱导骨肉瘤细胞中的铁亡
Wenkai Chen1,2, Zongguang Li1,2, Naichun Yu1,2
1Department of Orthopedic Surgery, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China.
Journal of nanobiotechnology
|September 29, 2023
概括
研究人员开发了装载着capreomycin的骨向外体,用于治疗骨髓瘤 (OS). 这些纳米粒子向骨瘤,通过铁亡诱导癌细胞死亡,并通过最小的副作用抑制瘤生长.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术纳米技术
- 在瘤学瘤学.
背景情况:
- 介质干细胞衍生的外体细胞 (EXO) 显示出通过输送药物来治疗骨髓瘤 (OS) 的前景.
- 限制包括药物变异性和非目标器官结合,阻碍治疗疗效.
- 增强的OS准和新药开发对于临床翻译至关重要.
研究的目的:
- 为针对性骨髓瘤治疗设计一种新的纳米粒子平台.
- 为了提高外体细胞对骨瘤的向特异性.
- 为了研究含有capreomycin的治疗潜力,向骨的外体诱导ferroptosis.
主要方法:
- 改造的骨髓衍生中酶干细胞 (BMSC) 外体与骨的向性 (SDSSD).
- 在修改后的外体内封装capreomycin (CAP),以创建骨准外体 (BT-EXO).
- 评估细胞吸收,体内瘤积累和OS细胞中的铁亡诱导,包括Keap1/Nrf2/GPX4通路的分析.
主要成果:
- 工程纳米粒子 (NP) 展示了同类准和增强的骨准能力.
- 在体外,BT-EXO显著促进了细胞内细胞内和体内瘤积累.
- 通过Keap1/Nrf2/GPX4通路的介导,NP通过增加活性氧物种 (ROS) 和Fe2+聚合来诱导OS细胞中的铁亡,从而在体内导致显著的瘤生长抑制,没有显著的副作用.
结论:
- 构建的NP在体外和体内都表现出强大的抗癌活性,对抗骨髓瘤.
- 这项研究提出了一个有希望的策略,用于将基于铁的化疗与针对性治疗结合起来,用于骨髓瘤治疗.
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